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Finding the Fourth Proportional to 505,395.88, 697,416.30 and 275,907.40

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Solution

The fourth proportional to 505,395.88, 697,416.30 and 275,907.40 is: 380,735.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,395.88 : 697,416.30 = 275,907.40 : x
  2. Step 2: Convert to fraction form
    505,395.88/697,416.30 = 275,907.40/x
  3. Step 3: Cross multiply
    505,395.88x = 697,416.30 × 275,907.40
  4. Step 4: Simplify right side
    505,395.88x = 192,422,318,050.62
  5. Step 5: Solve for x
    x = 192,422,318,050.62/505,395.88
  6. Step 6: Final answer
    x = 380,735.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.